I use posts for event announcements, e.g. "Come to this retreat on June 15!" My only way to remember to remove it after June 16 is to use a calendar (easier said than done) or have a user point out that it needs to be removed (most common).
I would like to automate this process using a plugin or some other means. Maybe WP has something built-in for which I am unaware. Either way, I would appreciate suggestions. Thank you!